The total amount of tax on her purchases is $378.47
Sale price = $450
original price = 25%y
dicount = +20%
solution = $450 × 45%
= $202.5
= $652.5
i am a mathematics teacher. if anything to ask please pm me
Step-by-step explanation:
452
For this case we must write in algebraic symbology the expression described above:
We have an equation, then:
- x squared plus y squared:
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- minus 2x plus 7y plus 1:
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- equals zero:

We construct the equation:

Answer:
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Since 30 times 5= 150, he worked 150 hours for the rest of the week.